What mass of fluorine gas is needed to react
Elemental sulfur occurs as octatomic molecules, S8. What mass of fluorine gas is needed to react completely with 18.7 g of sulfur to form sulfur hexafluoride?
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Unpolarized light passes through two polarizers in turn with polarization axes at 50° to one another. What is the fraction of the incident light intensity that is transmitted?
How many unpaired electrons does gadolinium have and which orbitals arethey in? Provide the electron configuration as part of your answer.
What is the average velocity of the student during his walking? What is the average speed that the student was moving?
Phosphate ons are a major pollurant of water supplies. They can be removed by precipitation using solutions of Ca2-ions becasue the Ksp of calcium phosphate is 2.0 x10-29 .
(a) What is the total momentum of the system of the two carts at this instant? (b) What was the velocity of the first cart when the second cart was still at rest?
A sample of nitrogen gas in a 4.6-Lcontainer at a temperature of 25°Cexerts a pressure of 3.7 atm. Calculate the number of moles of gas in the sample.
Ashley's mass is 67 kg, and Miranda's is 52 kg. Ignore the mass of the inner tube and any friction between the inner tube and the snow.
The electric repulsion force between the protons is huge, but the attractive nuclear force is even stronger and keeps the nucleus from bursting apart. What is the magnitude of the electric force between two protons?
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